Heating apparatus for fireless cookers.



G. H. HEWITT.

HEATING APPARATUS PoR FIRBLBSS GOOKERS.

APPLICATION FILED 00T. 1. 1912.

Patented Dec. 8, 1914.

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G. H. HEWITT.

HEATING APPARATUS FOR PIRELESS COOKERS.

APPLIGATION ILED 00T.1. 1912.

Patented Dec. 8, 1914.

iwwwm Guy llle ufl/Lt' GUY H.' HEWITT, GF EDLAINFIELD, NEW JERSEY.

HEATING APPARATUS FOR FIRELESS COOKERS.

Application led October 1, 1912.

To all whom. it may concern Be it known that I, GUY H. Hnwir'r, acitizen of the United States, residing at Plainlield, in the county ofUnion and State of New Jerseyj have invented new and useful.improvements in Heating Apparatus for Fireless Cookers, of which thefollowing is a specilication.

The general object of the invention is to admit of storing the heat froma suitable generator for the purpose of utilizing this heat for variouspurposes, such as cooking. And to this end the invention consists incombining a heat generator with a heat insulated container' and soarranging the parts as to admit of the introduction of the heat from thegenerator into the container.

Other objects will appear and be better understood from that embodimentof my invention of which the following is a specification, referencebeing had to the accompanying drawings forming part hereof, in whichFigure 1 is a vertical longitudinal section of one embodiment of myinvention showing the positions occupied by the several parts when thedevice is in use. Fig. 2 is a horizontal sectional view of the same cuton the line 2-2 of Fig. 1. Fig. 3 is a side elevation of the same.

Referring to the drawings, 1 represents the stove casing, formed of anysuitable material, preferably sheet iron. The cooking chamber 2 isprovided with a metallic lining 3 which is spaced from the casing 1 andthe intervening space is filled with any suitable non-conductor of heatas indicated at 4. The chamber 2 is provided at its opposite sides withbrackets 6-6 which are adapted to'support racks or trays 7-7. Anyconvenient number of brackets and racks or trays may be provided. Accessto the chamber 2 is had through a lateral opening in the casing andpassage through this opening is controlled by a swinging door 8constructed so as to tightly tit, when closed, within the opening. Animperforate slab 9 preferably of soapstone is supported by the uppermostrack 7 and a slab 10 of similar material is supported at the lowerportion of the cooking chamber 2. As shown in Fig. 1 of the drawing theslab 10 is supported upon the upper edge of a Hange 11 which in turn ismounted upon the bottom of the cooking chamber. The slabs 9 and l0 aresupported approximately in parallel rela- Specicaton of Letters Patent.

Patented Dec. S, 1914.-. serial No. 723,365.

tion, and are spaced from each other, the slab 9 being locatedvertically above the slab 10. The slab 10 is provided with a. centralopening indicated at 10 and the slab 9 extends across or bridges theopening 10 in the slab 10. A heat generator 12 is located in the lowerportion of the chamber 2 and within the flange l1. Flues lll and 15 leadinto the lower portion of the chamber 2 and into the space within theflange 11 respectively and a slide 13 is arranged to move over the outerends of the said ues. By reference to Fig. 3 of the drawing it will beseen that the slide 13 is mounted in guides 41 attached to the casingand a rod lll is attached to the said slide and passes through a guide45 also attached to the casing. A fuel pipe 36 is provided with a valve37 having a handle 38 which is connected by means of al link 39 with theslides 3. A pipe 35 connects the casing of the valve 37 with the heatgenerator 12.

When the slide 13 is elevated by usin the rod 44: the link 39 turns thehandle 38 of the valve 37 so that communication is established betweenthe pipes 36 and 35 and the fuel gas is permitted to low through thegenerator l2 where it is ignited. Then the slide 13 is lowered7 whichmay be done by using' the rod 4-1, the link 39 turns the handle 3S sothat the valve 37 is closed and consequently the flow of fuel throughthe pipes 36 and 35 is interrupted. When the slide 13 is moved in adownward direction it closes the outer ends of the fiues 14 and l5 andconsequently all of the heat which is in the cooking chamber 2 istrapped. l/Vhen the slide 13 is elevated it is moved above the outer endof the said dues 14 and 15 and consequently cold air may pass into theflue 15 to the heat generator 12 and the products of combustion may passout of the chamber 2 through the flue 14. The heat ascends from thegenerator 12 and passes through the opening in the lowermost slab 10 andasccnds directly against the uppermost slab 9 which bridges the saidopening 10 in the slab 10, consequently the slabs 9 and 10 are uniformlyheated in view of the fact that they are spaced from each other and allof their surfaces are exposed to the heat. The slabs 9 and 10 being ofsoap stone or similar material are heat absorbing and these slabs arearranged one above the other and also above the heat generator 12.Whatever the number of heat absorbing slabs used, all except theuppermost one are provided with intermediate openings so as to allow theheat from the heat generator to pass upward through the openings andheat the slabs uniformly.

Nhat is claimed as new is l 1n a stove having a heat retaining chainber,a plurality of heat absorbing elements and a heat generator within saidchamber, certain of the said heat absorbing elements being arrangedcontiguous to the top and bottom of the said chamber, the lowermostelement being formed with an aperture through which heat 'from thegenerator passes onto the uppermost absorbing element.

ln testimony whereof I aihx my signature in presence of two witnesses.

. GUYH. HEWITT. Witnesses:

LEMUEL SMITH, Jr.,

THEODORE E. JoHNs'roNn.

Copies of this patent may. be obtained for ve cents each, by addressingthe Commissioner of Patents.

Washington, D. C.

